Circulating somatostatin-28 is not a physiologic regulator of gastric acid production in man.

Abstract:

:Studies were designed to establish the acid inhibitory potency and plasma kinetics of somatostatin-28 (S-28) in humans and to determine whether the amount of S-28 released into the circulation after a meal is sufficient to regulate gastric acid secretion. A liquid meal induced a significant increase of S-28 (P < 0.01) whereas S-14 levels did not change. Postprandial S-28 concentrations were then mimicked by exogenous infusions and tested on basal and pentagastrin-stimulated gastric acid secretion. Expressed in terms of circulating plasma concentrations measured by specific radioimmunoassays, S-14 was 10 times more potent than S-28 in inhibiting gastric acid production. The plasma half-life of S-28 (1.86 min) was longer than that of S-14 (1.00 min) due to a slower plasma clearance rate. S-28 did neither affect basal and stimulated gastric acid secretion nor postprandial intragastric acidity. These studies suggest that postprandial plasma concentrations of S-28 are unlikely to regulate gastric acid secretion in man. They also show that S-28 is several times less potent than S-14 with respect to inhibition of gastric acid output.

journal_name

Eur J Clin Invest

authors

Hildebrand P,Ensinck JW,Buettiker J,Drewe J,Burckhardt B,Gyr K,Beglinger C

doi

10.1111/j.1365-2362.1994.tb02059.x

subject

Has Abstract

pub_date

1994-01-01 00:00:00

pages

50-6

issue

1

eissn

0014-2972

issn

1365-2362

journal_volume

24

pub_type

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